Carbureter.



T. J. NICHOLS;

CARBURETER. APPLIATION FILED MAR.9| 1915.

1,156,924. I Patented 00 19,1915.

Witnesses Attorney flaw z, inv m'or V .STATES 1 PATE WQ THEODORE inmeHoLs, or BELLEVUE, Texas, AssIeNoR or ONE-HALF moaomv s. 1 I l\T,ICHOLS, or uneven, TEXAS.

. cAmURErnn.

To atl whom it'may conbemi I Be it known that LTH onoRE J. NICHOLS,

a. barren of t'lie' Unitedi States, residing at Bellevuc, in the county of Clay and State of Texas, have invented a new and useful Carbu reter, of which the followingis a specifibeing ofinovel construction whereby the air is drawn throughthegasolene or l1qu1d fuel I towaporiz'e the fuel and thereby provide a thorough and proper mixture of theair and fuel,

tion toprovide a oarbureter improved generally in its construction and details, to en"- hance the utility, thereof, the carbureter "be- .ing comparatively simple and inexpensive in construction, and being thoroughly eflicientand practical "in use'. A

With theforegoing and other objects in View which. Willappear as thedescription proceeds, the invention resides in the combination and arrangementof parts and in the-details of construction hereinafter ,de-

scribed and'olaiined, it being-"understood; that changes infthe precise "embodiment of the invention herein disclosed can be made within the scope of What is claimed Without departing from the spirit of the invention.

The invention is illustrated in the accompanying. drawing, -wherein i Figure 1 1s a vert cal centralsection of the improved carbureter. Fig.2 ,is a horizontal the-line 2-2 of Fig. l.

or cross section of the carburetor taken "on.

, The presentcarbpreter comprisesan up-,.

right casing 1 havingv integral .convexed top 2 provided with an upstanding tubular ex-r tension 3 providing the outlet of the carbureter, which is adapted to be bolted or otherwise securedto the intake manifold 4L of the engine. The casing 1 is provided with a removable bottom or lower end 5 threaded therein,- and the bottom 5 is'pr'eferablyprovided with a pet cock-6 whereby the casing 1 may be drained Whenever desired. 4 i

7 Specification of Letters Patent. Application filed March 9, 1915. Serial m. 13,187.

leakage. The upper end of the pipe 8 protisfalso within the" seeps of the inven-- Patented-Oct.19,,1915

The top 2. of the casing is provided at one side of the extension or outlet 3, with an upstanding boss 7, through which an upright ail-inlet pipe 8 extends, the pipeS being slidable through the boss 7 ,and a gland nut 9 being-threaded upon the boss 7 for compressing the packing 9 against the pipe 8 for providing a fluid tight joint to prevent jects slightly above the boss 7 and nut 9,

and the lower end of the pipe 8 is provided with a horizontal or angularly extending perforated nozzle 10 intersecting the axis of .the casing 1 and located adjacent the bottom 5 of the casing. In other Words, the

ing at the lower endthereof, tlie pipe 8 be ing disposed adjacent one sidewall of the casing, and. the nozzle 10 projectingto the opposite side wall. The end of the. nozzle 10 is closed, and the side Walls of the nozzle are provided with the apertures or perforationsto allow the air to flow from the pipe 8 and nozzle 10 into the casing 1.

The outer or upper end of the pipe 8 is provided With a check valve, and to this end a plug 11 is threaded into the upper or outer end of the pipe 8, and is provided With an inner beveled valve seat 12 and air inlet apertures 13 extending from'the valve seatl2 to the outer or upper side of the plug 11.

A valve stem 14 is slidable through the plug,

11 between the apertures 13, and carries'a beveled valve 15 cooperating with the seat 12,. coiled wireexpansion spring 16 is disposed around: the stem 14 between, the plug .11 and a. nut 17 threaded uponf the outer or gfree end of the's'tem '14 fornormally seating the valve 15 to close the apertures 13, Whereby the air suction will unseat the valve 15 against the tension of the -:spring 16 to allow the air to enter the casing 1,

1 proportionatelyto the suction created by the engine. I

The gasolene or fuel inlet of the casing 1 "embodies a hollow coupling or member 18 provided withan upper removable screw cap 3 or closure 19, and a lower nipple 20. for the attachmentof the gasoleneor fuelpipe leading to the tank orother source of fuel sup- 1'00 nozzle 10 is located diametrically of the casply. The member 18 is provided with a valve seat 21 at the base of the nipple 20 or at the upper end of the duct which extends through the nipple, and the member 18 is also provided with a lateral branch or nipple threaded through or otherwise engaged to that side of the casing 1 opposite the pipe 8. The member 18 is located between the upper and lower ends of the easing or at a point spaced sufficiently. above the air nozzle 10.

A float lever 23 extends from within the member 18 through the branch 22 thereof into the casing 1 and is fulcrumed within the branch or nipple by means of a fulcrum pin 24 engaged through the sides of the branch 22. The arm of the lever 23 within the casing 1 is secured. to a cork or similar float 25 by means of a screw or other securing means 25, and the other arm of the lever 23 within the inlet member 18 carries a needle valve for COIllilOlllnQ the inlet of gasolene. cooperates with the valve seat 21 has its shank pivoted to an adjusting screw 2 which is threaded through the respective end of the float lever 23, whereby the needle valve 26 may swing or adjust itself to seat properly upon the seat 21 for closing the gasolene inlet through the nipple 20. The float 25 is of U-shape, and the lever 23 is attached to the intermediate portion of the float, whereby the float may stand astride the pipe 8, and whereby the pipe 8 passes through the slot of the lloat. The float thus occupies a suitable space within the casing 1; and projects to the opposite sides of the pipe 8 without interfering with the pipe.

'A screen or diaphragm28 is secured with in the casing 1 between the ends thereof and at a point suitably above the float 25, and the pipe 3 extends through the screen 28 The office of the screen is to diffuse the upwardly flowing air and vapor, whereby the air and vaporized fuel will be properly admixed to providethe combustible mixture. The carbureter-is equipped with a. second or auxiliary air inlet, and to this end a short pipe section or tubular member29 is threadedor otherwise engaged through that wall of the extension or outlet 3 opposite the pipe 8, and 1s provided at its outeror free end, with a check valvesimllar to the check valve carried by the pipe 8. Thus, a plug 30is aninner bevel valve seat 31 and inlet 'apers 'tures 32 leading from the valve seat to the.

outer side of the plug 30. A valve stem 33 v is slidable through thecentral portion of: the plug 30 and carries a beveled valve 34:

cooperable with the seat 31. The valve 34 is drawn toward its seat by means of a coiled wire expansion spring 35 surrounding the Thus, the needle valve 26 which' valve stem 33 and hearing at one end against the plug 30 and at its other end against a nut" 36 threaded upon the stem The valve 34 will be unseated by the suction, to admit an auxiliary supply of air into the in-' take conduit or manifold,'so that the auxiliary supply of air willmix with the carbureted airflowing upwardly through the extension or outlet 3 of the carbureter, and

whereby a saving of fuel is accomplished, as well as increasing the efficiency of the engine.

In operation, air will be drawn through the carburetor by the suction created during the suction strokes of the engine pistons, and this will draw the air into the pipe 8, and the air will be drawn out of the apertures or perforations of the air nozzle 10 so as to flow upwardly through the gasolene or fuel. The air thus flowing through the fuel will vaporize the fuel and the vaporized fuel will be carried upwardly with the air,

through the screen 28, which serve to diffuse the mixture for properly commingling the air and fuel. This screen28 will also prevent foreign particles from being drawn into the'engine with the carbu-reted air, and which will prevent or reduce to a minimum the formation of soot .or carbon within the cylinders. i v

The flow of carbureted air is controlled by means of a throttle valve 37 pivoted within the outlet extension-3 of the carbu- .the normal levelI It is to be noted. that the air in being drawn upwardly through the gasolene will pass around the valve25, and this will as-' sist in the proper vaporization of the fuel. Furthermore, the-float is carried within the main chamber of the carburetor, .sothat a separate float chamber.is not necessary.

What isclaimed is: I

A carburetor comprising an casing having an upper outlet and a fuel inlet .member at one side, an air inlet pipeslidablethrough the top. of the casing and extending downwardly therein adjacent that side of the .casing opposite the fuel inlet member, the lower end of the air inlet pipe 0 having an \apertured nozzle projecting the opposite side'ofthe casing, a U-shaped float within the casing above said nozzle and 'the float, and a alve carried by the other standing astride said pipe, a lever fulcrumed ate my own, I have hereto aifixed my signa- Within the fuel inlet member and having one ture in the presence of two witnesses. arm attaehed to the intermediate portion of THEODORE J NICHOLS arm of the lever and arranged'tocontrol the Vitnesses:

inlet of fuel into the fuelinlet member. I L. B. MOORE,

In testimony that I claim the foregoing G. L. WELO H. 

